- Highly enantioselective nitrone cycloadditions with 2-alkenoyl pyridine N-oxides catalyzed by Cu(II)-BOX complexes.
Highly enantioselective nitrone cycloadditions with 2-alkenoyl pyridine N-oxides catalyzed by Cu(II)-BOX complexes.
Organic letters (2010-12-24)
Santiago Barroso, Gonzalo Blay, M Carmen Muñoz, José R Pedro
PMID21175140
ABSTRACT
Enantioselective nitrone cycloadditions with 2-alkenoyl pyridine N-oxides as dipolarophiles have been reported. The reaction is catalyzed by Cu(II)-BOX complexes to give the expected isoxazolidine products with high diastereo- and enantioselectivity.
MATERIALS